<![CDATA[Quality problems persist in the production of the 14.08 mm Screen Assy at PT Industri Komponen Otomotif, where the observed defect rate surpasses the company’s quality standard. Production records from 2024 show an average defect rate of roughly 2%, well above the company’s tolerance of 0.2%, and Ami (wire mesh) defects are the most frequent type. Such defects can lower product quality and push up costs through rework and scrap, so a more structured approach to quality control is needed. This study applies the seven quality control tools (check sheet, histogram, Pareto chart, scatter diagram, cause-and-effect or fishbone diagram, control chart, and flowchart) in a quantitative approach to inspection reports collected from April 2024 to February 2025. Of the 268,584 units produced, 3,141 were defective, and Ami defects accounted for 1,093 units (32.3%). The fishbone analysis points to human factors as the leading cause, followed by machine and work-method factors. The process is generally statistically in control, although several points lie close to the upper control limit. The Seven Tools thus help trace the root causes of defects in an organized way and provide a basis for continuous improvement proposals. Keywords: Defect, Fishbone Diagram, Quality Control, Screen Assy, Seven Tools ]]>
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